The watchful older sister

Lily listens for William to wake up in the morning and then rushes in to be the first one to greet him. Often I lay in bed and listen to their "conversations" before I get him up for the day. On this particular morning, I went in to find this. It is kind of hard to see, but Lily is listening to William's heartbeat with a stethoscope. I never know what to expect with Lily!